Shell-inverting mechanism fro drawin-presses.



H. B. SHERMAN. SHELL INVERTING MECHANISM FOR DRAWING PRESSES.

APPLICATION FILED AUG..6. I91].

Patented Oct. 8, 1918.

4 SHEETS- SHEET l.

H. B. SHERMAN.

SHELL INVERTING MECHANISM FOR DRAWING PRESSES. APPLICATION FILED AUG.6.1911.

1,280,881. Patented Oct. 8,1918.

4 SHEETS-SHEEI 2'.

Inn? 7? 50/1 H. B. SHERMAN. SHELL INVERTING MECHANISM FOR DRAWINGPRESSES.

APPLICATION FILED AUG-5 1$"?- 1,280,881. Patented Oct. 8,1918.

4 SHEETS-SHEET 3- C iP H. B. SHERMAN. SHELL INVERTING MECHANISM FORDRAWING PRESSES.

APPLICATION FILED AUG.6. ISII. Patented Oct. 8, 1918.

4 SHEETSSHEEI 4.

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HOWARD B. SHERMAN, OF BATTLE CREEK, MICHIGAN.

SHELL-INVERTING- MECHANISM FOR DRAWING-PRESSES.

Specification of Letters Patent.

Patented Oct. 8, 1918.

Application filed August 6, 1917. Serial No. 184,719.

To all whom it may concern:

Be it known that I, HOWARD B. SHERMAN, a citizen of the United States,residing at Battle Creek, in the county ofOalhoun and State of Michigan,have invented certain new .and useful Improvements in Shell-InvertingMechanism for Drawing-Presses; and I hereby declare that the followingis a full, clear, and exact description thereof, reference being had tothe accompanying drawings, which form part of this specification.

This invention is an improvement in machines for stamping and drawingmetal, such as shown in my Patents No. 1,117,097, dated November 10,1914:, and No. 1,136,558, dated April 20, 1915.

The-object of the present invention is to provide novel means forreversing the position of the drawn shells or like objects after theSame are drawn and before they are deliveredto the carrier by which theyare presented to other mechanism for further operation thereupon; and inparticular sothat if theshells are drawn with their closed ends downwardthey shall be delivered to the carrier with their closed ends uppermost.Such inversion of the shells is useful and important in the productionof various drawn metal articles and enhances the field of work, orvariety of work for Which my said patented drawing machines may be used,or the number of operations which may be successfully performed on theobjects in the machines.

I will explain the invention as applied to the said patented machines,but when understood those familiar with the art can readily apply it toother machines, and I do not consider itrestricted to the particulartype of machines shown in my said patents; and refer to the claimsfollowing the description for summaries of all essentials of theinvention and the novel features and combinations of parts.

In said drawings:

Figure 1 is a partial front elevation of a press, N 0. 1,117,097, withthe invention applied thereto.

Fig. 2 is an enlarged detail sectional view on line 22 Fig. 1.

Fig. 3'is an enlarged front elevation of the parts of the shellinverting mechanism such as shown in my Patent' .tered alternately withshown in Figs. 1 and 2 looking from the rear of Fig. 1.

Fig. 4 is a sectional view of Fig. 2.

Fig. 4 is a detail.

Figs. 5, 6, 7, 8, 9, 10 and 11 are diagram matic sectional viewsillustrating some of the possible modifications of the invention.

On the main frame of the machine shown in my aforesaid patent aremounted a double-acting draw press, or other operative mechanism, and asingle acting draw press, or other operative mechanism, arranged side byside. For convenience I will hereinafter refer to these mechanisms asdouble-acting press and single-acting press, but such terms are merelyillustrative of the invention, and not definitive thereofand areintended to include any mechanisms with which the novel blank or objecttransferring mechanism or carrier could be usefully employed.

The double acting portion of the press has a bed 1, supporting a femaledie 4 coacting with a male die 49 on a slide P; and the single-actingportion of the press has a bed 1 supporting a changeable female die 8coacting with a male die 8 attached to a slide 8*. The construction ofsaid slides and means for operating same are well known, and may be ofany suitable kind. The die 8 is arranged above an opening 8 throughwhich the drawn shells are dropped onto a suitable carrier 9, which inthe example shown is rotatably mounted below bed 1 and above bed 1, andis adapted to carry the shells received from die 8 to and over achangeable die or dies 41 mounted on bed 1 above an opening or openings4". This carrier may be operated in any suitable way, and may be of anysuitable construction to carry shells from one bed or means for ating onthe shells, to another bed or ating means.

In preferred form of the device shown in Figs. 1-3 a casting A isattached to the bed 1 below opening 8, said casting having aparti-cylindric chamber at having an inlet a adapted to receive theshells from passage 8, and an outlet a adapted to discharge the shellsonto the carrier 9 or into a pipe D by which the shells may be directedinto a carrier or receiver. On chamber a is mounted a disk B, which asshown has a peripheral socket B adapted to be registhe inlet a andoutlet operopershaft J isalso S closed-end stroke to is uppermost, as,shown in Figs. 2 and l, it will receive a drawn shell down from passage8, and when the disk is turned 180 the shell will be inverted anddischarged with its closed end uppermost through the outlet a onto thecarrier 9.

The socket B may be provided with ribs 2 on its sides to properly centerthe shell therein and may be provided with any suitable means to ejectthe shell at the proper. time, as shown an ejecting pin C is yieldinglyconfined in the bottom of the socket and may be projected by its weight,aided by a spring C so as to eject the shell when the disk has beenturned to bring the shell to the outlet a The disk B may be operated byany suitable means. As shown it is mounted'on a stub shaft E journaledin bearings in the bracket A and in the side wall of the bed 1; and onthis shaft E is keyed a pinion g which meshes with a segmental rack H ona lever H which is attached to a rock-shaft J, mounted in suitablebearings, and as shown in a bracket K attached to the bed or ress framebelow the shaft E. On this a When socket B keyed an arm V which has a onits outer end bearing against the under side of a lever M looselymounted on shaft J.

The lever M is loosely mounted on shaft J and carries a roller M bearingagainst a cam N on the shaft 0 (operated by gearing not shown) thatactuates the mechanism (not shown) by which carrier 9 is rotated, so

spring projected bolt V that foreach: step imparted to the carrier. thelever M will be rocked once back and forth and consequently through rackH will impart an oscillatory motion tothe shaft E sufficient to turn thedisk B through an arc of approximately 180, de grees. The lever H may berocked by spring means in opposition to the cam N and so as to holdlever M a spring H being shown in Fig. 3, attached to cam N, spring Hlever H and to a suitable'point on the frame.

On the shaft E is keyed an arm F which is adapted to alternately contactwith stop bolts Q and Q which are adjustably mounted in studs T Tattached to the bed 1 at opposite sides of the shaft E, as shown inFig. 1. Said stops are provided so as to. permit cam N to impart aslightly longer lever M than is necessary to turn the disk B a halfrevolution. When arm F comes into contact with either stop Q or Q itarreststhe movement of the disk B, the spring V permitting the extra.move,- ment imparted to lever M by cam N when the arm F is engaged withstop Q.

In operation shaft 0 is revolved by gear ing forming part of the. pressmechanism (not shown) and cam N being keyed to this back and forthnormally against said cam,

shaft revolves with it. The roller M on the end of lever M is held incontact with cam N by the action of spring H and bolt V, and as lever Mis depressed by cam N, the quadrant H is oscillated in such a manner asto revolve the pinion G through an arc of 180 degrees, and this pinionbeing keyed to this shaft E, disk B is also revolved through the sameare, thus bringing the pocket B in the disk alternately to top andbottom positions; and if a shell was deposited in the pocket when in theposition shown in Fig. 2 it would be inverted or reversed and fall bygravity, spring plunger G when broughtopposite the outlet passage a seeFig. 4.

The stops Q can be adjusted to compensate for wear and also to insureaccurate alinement ofthe pocket B in the disk with the intake anddischarge openings. a M, as by adjusting the stops Q, and Q the properregister of the pocket in disk B' with the .intake and d'schargeopeningsa a canbe positively assured.

A shell after being stripped from the die is free to fall throughopening a into the pocket in the disk, the open end of shell beinguppermost (see Fig. 2). They disk is then turned over until the pocketregisters with the discharge opening a at which time the shell is in aninverted position, with open end downward, and in this position theshell drops into the carrier underneath.

The essential feature of the present inven tion is the provision ofmeans for the inversion of the shell after it one mechanism or operatedupon before it is delivered to the carrier or another mechanism and thedevices shown in Figs. 1 to l are at this time preferred.

V The invention may be embodied in various mechanical forms and somesuch forms in the drawings without intending to limit the inventionthereby or thereto.

' In the device shown in Fig. 5 the bracket A has a pocket a in which ismounted a disk B, said pocket having an inlet a and outlet (4 The disk Bhas a pocket I) below which is a long cavity 7) in which a ball 5 isloosely confined. dropped into the pocket the disk is revolved through arevolution until the with the outlet (1 At this angle the ball 5 whichhas been resting in the bottom of the cavity 5' willdescend by gravityand eject the shell. The disk ated by any suitable means; as rod 1).connected with any suitable operative part of he machine not shown.

Fig. Gthe bracket is a disk B provided with series of peck ets. 0adapted to successively register with assisted by thev (see Fig. 4)

has been drawn by by a pitman V,

A? has a recess which I have illustrated B? may be operi V mechanism,not shown.

inlet a and invert the from the inlet to the outlet a This disk B may beoperated ste by step by any suitable intermittent ratciet gear orsimilar shells S as they pass Fig. 7 shows a disk B with a plurality ofmagnetized contact points 03 on its periphery, each adapted to retain ashell S by magnetic attraction. This disk is revolved by any suitablemeans not shown, and carries the shells successively from the inlet tothe discharge; the shells being stripped of]? at the discharge bycontact with the wall or stop (5; this construction could only be usedfor shells made of magnetizable material.

Fig. 8 shows a lever B pivoted at e in the side of the bracket'below theinlet a and provided with a pocket 6 on its inner end adapted to receivethe shells. Below the lever B is an inwardly projecting finger 0 adaptedto enter the pocket through a slot in the bottom thereof when the leveris lowered and eject the shell therefrom, as indicated in dotted lines.This lever B may be oscillated by any suitable means (not shown) fromthe receiving position shown in full lines, to the discharging positionshown in dotted lines, and the shell is ejected from pocket 6 and turnedover by finger e entering through the bottom of pocket as the leverdescends.

In the construction shown in Fig. 9 the shell falls by gravity frompassage 8 into a small pocket f and is tipped out of said pocket over arib 7 into the outlet 7 by means of a trip finger S which is revolved byany suitable mechanical means, not shown, and engages the open end ofthe shell S in pocket f and turns it over into the discharge asindicated in dotted lines.

In Fig. 10 an arm 9 having a pocket 9 on its end is mounted on a rockshaft adjacent the passage 8 and in normal position the arm lies withina pocket in position to receive a shell dropping through the inlet 9from passage 8", and the arm can then be rocked to the position shown indotted lines, so as to invert the shell and dis charge it mouth downwardthrough the outlet opening 9 Fig. 11 shows a gravity tube It into whichthe shells are delivered from passage 8, the tube being curved so thatthe shells are turned over in their descent due to the shape of thetube. A slide valve k is arranged at the lower end of the tube and canbe mechanically Withdrawn at proper times by an actuating lever 7Loperated by any suitable means, not shown, so as to permit the invertedshell to fall into the outlet h.

In each of the constructions shown it will be observed that the shell orobject will be inverted between the upper operating mechanism, and thecarrler or lower operating mechanism.

I claim:

1. In a drawing press the combination of successive drawing mechanisms,means for directing the blank from one mechanism to the other, and meansfor inverting the blank in its passage from one mechanism to another.

an upper drawing mechanism and a lower drawing mechanism and means forinverting the object being operated upon in its passage from oneoperating means to the other.

3. In a drawing press the combination of an upper drawing mechanism-anda lower drawing mechanism at one side thereof; with means interposedbetween said mechanisms for inverting the shell or blank being operatedupon in its passage from the upper to the lower mechanism.

4. In a drawing press the combination of successive drawing mechanisms,a carrier for conveying shells or blanks from one mechanism to theother, and means for inverting the blank in passing from the firstmechanism to the carrier.

5. In a drawing press the combination of drawing mechanism, a carrierfor conveying shells or blanks delivered from such mechanism, and meansfor inverting the blank discharged from the mechanism before delivery tothe carrier.

6. In a drawing press the combination of upper and lower drawingmechanisms, a carrier for conveying shells or blanks discharged from theupper mechanism to the lower mechanism, and means for inverting theblank discharged from the upper mechanism before its delivery to thecarrier.

7. Means for inverting shells or blanks comprising an oscillatory memberhaving a pocket and means for oscillating said member so as to registerthe pocket alternately with inlet and outlet points, and means forinsuring registering of the pocket with the inlet and outlet points.

8. Means for inverting shells or blanks comprising an oscillatory membermeans for rocking said member back and forth so as to register thepocket alternately with the inlet and outlet points, and adjustablestops for insuring registering of the pocket with the inlet and outletpoints.

9. Means for inverting shells or blanks comprising an oscillatory memberhaving a pocket, means for moving said member so as to register thepocket alternately with inlet and outlet points, means for insuringregistering of the pocket with the inlet and outlet points, and meansfor ejecting blanks from the pocket in said member, substantially asdescribed.

10. Means for inverting shells or blanks comprising a member having apocket, a rock-shaft for operating this member, a pinion on said shaft,a segment meshing with 2. In a drawing press the combination of saidpinion, a spring pressed lever for operating said segment, a camengaging said lever, and a second lever having a spring memberyieldingly transmitting motion from the cam to the segment.

11. Means for inverting shells or blanks, comprising a member, arock-shaft for operating this member, a pinion on said shaft, a

segment meshing With said pinion, a spring pressed lever for operatingsaid segment and a cam engaging said lever, an arm on said rock-shaftand adjustable stops adapted to be engaged by said arm to limit themovement of said member.

12. Means for inverting shells and the Copies of this patent may beobtained for five cents each, by addressing the Washington, D, 0,.

like, comprising a member having a pocket, a roclcshaft for'operatingthis member, a pinion on said shaft, a segment meshing With said pinion,operating said segment, a cam engaging said lever, and a second leverhaving a spring member yieldingly transmitting motion from the cam tothe segment with an-armon said rock-shaft, and adjustable stops adaptedtoqbe engage by'said arm to insure registration of the pocket i theinlet and outlet points. 7 a

In testimony that I claim the foregoing as my own, I afiix my signature.

a HOWARD B. SHERMAN,

Commissioner of Patents,

'11 said. member with a spring pressed lever for

